Reference 525.OX.0180.LR marks this replica classic fusion 0180 as the King Gold entry in Hublot’s Aerofusion chronograph range. King Gold is the brand’s proprietary alloy that blends gold with platinum and copper to create a warmer, more oxidation-resistant tone than standard rose gold. At 45mm, the case carries significant visual weight, amplified by the golden surface treatment that catches light across every polished facet. The “LR” suffix indicates a leather strap, pairing traditional luxury with the Aerofusion’s contemporary skeleton architecture.

Build Details

• Reference: 525.OX.0180.LR
• Case diameter: 45mm
• Case material: King Gold (proprietary gold alloy)
• Dial: skeleton/open-worked
• Crystal: sapphire
• Strap: leather with deployant clasp
• Movement: automatic Aerofusion chronograph
• Functions: hours, minutes, chronograph, date

King Gold’s platinum content makes it harder than standard 18k rose gold, adding durability alongside aesthetic warmth. The alloy resists the reddish tarnishing that conventional rose gold develops over time, keeping its original tone longer without polishing.

What Collectors Notice

The Aerofusion skeleton layout on a gold case creates a tension between traditional dress watch material and modern open-worked design. Collectors tracking the Classic Fusion range often compare this gold reference against the ceramic and titanium alternatives in the same 525 series. The gold version commands a different wrist presence entirely. Where the ceramic 525.CM disappears into a monochrome sleeve, the 525.OX announces itself. For a different material perspective within the same family, the 541.NX.2610.LR in titanium with carbon dial offers a sportier profile. Both belong to the Classic Fusion range but serve different collector instincts.

This vs Other Versions

Within the 525 Aerofusion family, material choice defines each reference more than case shape or movement, since those remain constant across the series. The OX designation puts this squarely in the precious metal tier, above the NX titanium and CM ceramic variants. Paired with leather rather than rubber, the 525.OX.0180.LR leans formal without abandoning the skeleton sportiness that defines the Aerofusion sub-line. This replica classic fusion 0180 puts King Gold wrist presence into the Aerofusion format for those who want skeleton and luxury in one package.